Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 11:05:27 PM (PDT) on Sunday, September 21, 2025.
The magnitude 0.7 event occurred 25 km (15 miles) S of Tracy, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 0.7 - duration magnitude (Md) |
| Time | Sunday, September 21, 2025 at 11:05:27 PM (PDT) Monday, September 22, 2025 at 6:05:27 (UTC) |
| Distance from |
Tracy, CA - 25 km (15 miles) S (179 degrees) Patterson, CA - 26 km (16 miles) WNW (282 degrees) Mountain House, CA - 31 km (19 miles) SSE (160 degrees) Riverdale Park, CA - 34 km (21 miles) WSW (253 degrees) West Modesto, CA - 35 km (22 miles) WSW (252 degrees) |
| Coordinates | 37 deg. 31.1 min. N (37.519N), 121 deg. 25.1 min. W (121.419W) |
| Depth | 2.74 km (1.70 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=9, Nph=12, Dmin=8.2 km, Rmss=0.19 sec, Erho=0.57 km, Erzz=5.71 km, Gp=128 degrees |
| Event ID# | nc75240447 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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